/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.http.codec;
import java.time.Duration;
import java.util.Collections;
import org.junit.Test;
import reactor.core.publisher.Flux;
import reactor.test.StepVerifier;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.AbstractDataBufferAllocatingTestCase;
import org.springframework.http.MediaType;
import org.springframework.http.codec.json.Jackson2JsonDecoder;
import org.springframework.mock.http.server.reactive.test.MockServerHttpRequest;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* @author Sebastien Deleuze
*/
public class ServerSentEventHttpMessageReaderTests extends AbstractDataBufferAllocatingTestCase {
private ServerSentEventHttpMessageReader messageReader =
new ServerSentEventHttpMessageReader(new Jackson2JsonDecoder());
@Test
public void cantRead() {
assertFalse(messageReader.canRead(ResolvableType.forClass(Object.class),
new MediaType("foo", "bar")));
assertFalse(messageReader.canRead(ResolvableType.forClass(Object.class), null));
}
@Test
public void canRead() {
assertTrue(messageReader.canRead(ResolvableType.forClass(Object.class),
new MediaType("text", "event-stream")));
assertTrue(messageReader.canRead(ResolvableType.forClass(ServerSentEvent.class),
new MediaType("foo", "bar")));
}
@Test
public void readServerSentEvents() {
MockServerHttpRequest request = MockServerHttpRequest.post("/").body(
"id:c42\nevent:foo\nretry:123\n:bla\n:bla bla\n:bla bla bla\ndata:bar\n\n" +
"id:c43\nevent:bar\nretry:456\ndata:baz\n\n");
Flux<ServerSentEvent> events = this.messageReader
.read(ResolvableType.forClassWithGenerics(ServerSentEvent.class, String.class),
request, Collections.emptyMap()).cast(ServerSentEvent.class);
StepVerifier.create(events)
.consumeNextWith(event -> {
assertEquals("c42", event.id().get());
assertEquals("foo", event.event().get());
assertEquals(Duration.ofMillis(123), event.retry().get());
assertEquals("bla\nbla bla\nbla bla bla", event.comment().get());
assertEquals("bar", event.data().get());
})
.consumeNextWith(event -> {
assertEquals("c43", event.id().get());
assertEquals("bar", event.event().get());
assertEquals(Duration.ofMillis(456), event.retry().get());
assertFalse(event.comment().isPresent());
assertEquals("baz", event.data().get());
})
.expectComplete()
.verify();
}
@Test
public void readServerSentEventsWithMultipleChunks() {
MockServerHttpRequest request = MockServerHttpRequest.post("/")
.body(Flux.just(
stringBuffer("id:c42\nev"),
stringBuffer("ent:foo\nretry:123\n:bla\n:bla bla\n:bla bla bla\ndata:"),
stringBuffer("bar\n\nid:c43\nevent:bar\nretry:456\ndata:baz\n\n")));
Flux<ServerSentEvent> events = messageReader
.read(ResolvableType.forClassWithGenerics(ServerSentEvent.class, String.class),
request, Collections.emptyMap()).cast(ServerSentEvent.class);
StepVerifier.create(events)
.consumeNextWith(event -> {
assertEquals("c42", event.id().get());
assertEquals("foo", event.event().get());
assertEquals(Duration.ofMillis(123), event.retry().get());
assertEquals("bla\nbla bla\nbla bla bla", event.comment().get());
assertEquals("bar", event.data().get());
})
.consumeNextWith(event -> {
assertEquals("c43", event.id().get());
assertEquals("bar", event.event().get());
assertEquals(Duration.ofMillis(456), event.retry().get());
assertFalse(event.comment().isPresent());
assertEquals("baz", event.data().get());
})
.expectComplete()
.verify();
}
@Test
public void readString() {
String body = "data:foo\ndata:bar\n\ndata:baz\n\n";
MockServerHttpRequest request = MockServerHttpRequest.post("/").body(body);
Flux<String> data = messageReader.read(ResolvableType.forClass(String.class),
request, Collections.emptyMap()).cast(String.class);
StepVerifier.create(data)
.expectNextMatches(elem -> elem.equals("foo\nbar"))
.expectNextMatches(elem -> elem.equals("baz"))
.expectComplete()
.verify();
}
@Test
public void readPojo() {
MockServerHttpRequest request = MockServerHttpRequest.post("/").body(
"data:{\"foo\": \"foofoo\", \"bar\": \"barbar\"}\n\n" +
"data:{\"foo\": \"foofoofoo\", \"bar\": \"barbarbar\"}\n\n");
Flux<Pojo> data = messageReader.read(ResolvableType.forClass(Pojo.class), request,
Collections.emptyMap()).cast(Pojo.class);
StepVerifier.create(data)
.consumeNextWith(pojo -> {
assertEquals("foofoo", pojo.getFoo());
assertEquals("barbar", pojo.getBar());
})
.consumeNextWith(pojo -> {
assertEquals("foofoofoo", pojo.getFoo());
assertEquals("barbarbar", pojo.getBar());
})
.expectComplete()
.verify();
}
@Test // SPR-15331
public void decodeFullContentAsString() {
String body = "data:foo\ndata:bar\n\ndata:baz\n\n";
MockServerHttpRequest request = MockServerHttpRequest.post("/").body(body);
String actual = messageReader
.readMono(ResolvableType.forClass(String.class), request, Collections.emptyMap())
.cast(String.class)
.block(Duration.ZERO);
assertEquals(body, actual);
}
}